Warner Bros. has opened the doors to its "Harry Potter" studio tour in London, attracting franchise fans and many of the film's stars. Check out video below of Rubert Grint, director David Yates and more on the red carpet. More at HeyUGuys.

The New York Times' Sarah Lyall reports, "how could you not be impressed at how lovingly, lavishly and thoughtfully the organizers have distilled 11 years of filmmaking into a single enormous spectacle bound to appease even the most incurable Harry Potter addict?" She adds, "If the movies were heroin, this is the methadone."